Environment or configuration on Streamlit Cloud

requirement file

python==3.9
streamlit==0.83.0
plotly==5.3.1
seaborn
matplotlib

getting error

[     UTC     ] Logs for summer-olympics-2016-mvnrsv7.streamlit.app/
────────────────────────────────────────────────────────────────────────────────────────
[18:08:42] 🚀 Starting up repository: 'summer-olympics-2016', branch: 'main', main module: 'app.py'
[18:08:42] 🐙 Cloning repository...
[18:08:47] 🐙 Cloning into '/mount/src/summer-olympics-2016'...
[18:08:47] 🐙 Cloned repository!
[18:08:47] 🐙 Pulling code changes from Github...
[18:08:48] 📦 Processing dependencies...

──────────────────────────────────────── pip ───────────────────────────────────────────

ERROR: Could not find a version that satisfies the requirement python==3.9 (from versions: none)
ERROR: No matching distribution found for python==3.9
WARNING: You are using pip version 22.0.3; however, version 23.2.1 is available.
You should consider upgrading via the '/home/adminuser/venv/bin/python -m pip install --upgrade pip' command.
Checking if Streamlit is installed

────────────────────────────────────────────────────────────────────────────────────────

[18:08:50] ❗️ installer returned a non-zero exit code
[18:08:50] ❗️ Error during processing dependencies! Please fix the error and push an update, or try restarting the app.
[18:10:23] ❗️ Streamlit server consistently failed status checks
[18:10:23] ❗️ Please fix the errors, push an update to the git repo, or reboot the app.

Don’t include python in requirements.txt file. It’s not a pip package! Python comes by default in streamlit cloud.
Also, a tip try to use a newer/latest streamlit version.

The error indicates an issue with your Python version specification. Streamlit doesn’t require specifying the Python version in the requirements file. Remove the line python==3.9 from your requirements.txt, and then redeploy your app. Streamlit will use the appropriate Python version on its own.